U.S. Route 9 (US 9) is a part of the U.S. Highway System that runs from Laurel, Delaware, to Champlain, New York. In New York, US 9 extends from the George Washington Bridge in Manhattan to an interchange with Interstate 87 (I-87) just south of the Canada–United States border in the town of Champlain. US 9 is the longest north–south U.S. Highway in New York. The portion of US 9 in New York accounts for more than half of the highway's total length. The section of US 9 in New York passes through busy urban neighborhoods, suburban strips, and forested wilderness. It is known as Broadway in Upper Manhattan, the Bronx and much of Westchester County, and uses parts of the old Albany Post Road in the Hudson Valley, where it passes the historic homes of a U.S. President (Franklin Delano Roosevelt) and Gilded Age heir. It passes through the downtown of Albany, the state capital, as well as Saratoga Springs. It penetrates into the deep recesses of the Adirondack Park and runs along the shore of Lake Champlain, where it is part of the All-American Road known as the Lakes to Locks Passage. US 9 spawns more letter-suffixed state highways than any other route in New York, including the longest, New York State Route 9N (NY 9N). Outside of the cities it passes through, it is a mostly a two-lane road, save for two expressway segments in the mid-Hudson region. For much of its southern half it follows the Hudson River closely; in the north it tracks I-87 (the Adirondack Northway). Route description The New York segment of US 9 can be divided into the section south of Albany, which parallels the Hudson River closely, and the portion north of Albany, which takes in a long section of the eastern Adirondacks. New York State Bicycle Route 9 follows the US 9 corridor, diverging from the route in areas not conducive to bicycling. For example, Bicycle Route 9 follows US 9W in northern New Jersey and Rockland County, crosses the Bear Mountain Bridge, and follows NY 9D and NY 301 back to US 9 in Putnam County. New York City and the Hudson Valley US 9 enters New York as part of an expressway, soon becoming a surface street and major urban and suburban artery. Outside of the expressway portions, it is mostly a two- or four-lane road save for